Amazon ANS-C01 Exam - Topic 2 Question 55 Discussion

Actual exam question for Amazon's ANS-C01 exam

Question #: 55
Topic #: 2

Your company runs an application for the US market in the us-east-1 AWS region. This application uses proprietary TCP and UDP protocols on Amazon Elastic Compute Cloud (EC2) instances. End users run a real-time, front-end application on their local PCs. This front-end application knows the DNS hostname of the service.

You must prepare the system for global expansion. The end users must access the application with lowest latency.

How should you use AWS services to meet these requirements?

ARegister the IP addresses of the service hosts as ''A'' records with latency-based routing policy in Amazon Route 53, and set a Route 53 health check for these hosts.

BSet the Elastic Load Balancing (ELB) load balancer in front of the hosts of the service, and register the ELB name of the main service host as an ALIAS record with a latency-based routing policy in Route 53.

CSet Amazon CloudFront in front of the host of the service, and register the CloudFront name of the main service as an ALIAS record in Route 53.

DSet the Amazon API gateway in front of the service, and register the API gateway name of the main service as an ALIAS record in Route 53.

Show Suggested Answer

Suggested Answer: B

by Katheryn at Aug 12, 2025, 04:52 AM

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Fletcher

3 months ago

Wait, can CloudFront really handle TCP/UDP protocols?

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Tamie

3 months ago

D feels like overkill for this scenario.

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Erasmo

3 months ago

I think C is better for global distribution!

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Alonzo

3 months ago

Option B seems solid with ELB in front.

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Cherelle

4 months ago

A is a straightforward approach, but not sure about the health checks.

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Hester

4 months ago

I feel like the API Gateway might not be the right fit here since it's more for RESTful APIs, but I need to double-check that.

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Candida

4 months ago

CloudFront seems like a good option for caching, but I’m uncertain if it’s suitable for TCP and UDP protocols.

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Javier

4 months ago

I think using an ELB in front of the service could help with load balancing, but I can't recall if it directly improves latency.

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Benedict

4 months ago

I remember we discussed latency-based routing in Route 53, but I'm not sure if using just A records is enough for our needs.

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Sarah

5 months ago

This is a great question to test our understanding of AWS services and how to optimize for global low-latency access. I'll carefully weigh the pros and cons of each approach before making my decision.

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Xenia

5 months ago

I'm not sure about using the API Gateway here. Isn't that more for managing and securing APIs? I think the other options like ELB or CloudFront are more relevant for this use case.

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Pamela

5 months ago

Okay, I think I've got a good handle on this. The key is to use a latency-based routing policy in Route 53 to direct users to the closest service endpoint. I'm leaning towards option B with the ELB.

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Beatriz

5 months ago

Hmm, I'm a bit confused about the difference between using an ELB vs. CloudFront. I'll need to review the details of each service to determine the best approach.

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Lashunda

5 months ago

This looks like a tricky question. I'll need to carefully consider the requirements and the AWS services available to meet them.

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